24 BTIiETIX 104-5, U. S. DEPART^IE^I OF AGEICIXTUEE. 
Michigan, and TTashington agricultural experiment stations, at the 
United States Department of Agriculture field stations at Huntley. 
Mont., and Scottsbluff, Nebr., and at the Manitoba Agricultural Col- 
Li ge The conclusions arrived at by the experimenters differ mark- 
edly. It is impossible to determine from available data just why 
the sunflovrer silage was palatable in one case and not in another. 
There are a sumcient number of failures, however, to indicate that 
more care and judgment are necessary to make good sunflower silage 
than to make good corn silage. 
At the West Virginia nation the cow^ fed on a sunflower- 
silage ration produced per cow a daily average of 27.93 pounds of 
milk and 1.05 pounds of butter fat. while those fed corn silage pro- 
duced an average per cow of 29.17 pounds of milk and 1.03 pounds of 
butter fat daily. In this test the milk produced by the cows fed 
sunflower silage averaged 3.71 per cent of butter fat and that pro- 
duced from the corn-silage ration 3.60 per cent. At the TTashington 
station (J&O) the cows ate more silage and less grain during the 
Is when given corn silage than while they were being fed sun- 
fl ri silage. During the sunflower-silage periods the cows pro- 
duced more milk but lost a few pounds in weight. TTliile fed corn 
silage there was an appreciable gain in weight. The authors of the 
report conclude that sunflower silage in this test was approximately 
ei r:.r as valuable as corn sdage. At the Manitoba Agricul- 
tural College 1 a feeding trial was carried on with seven cow- 
from December 19. 1919. to April 1. 192 . the conclusion being that 
the cows maintained their milk flow and body weight fully as well 
the sunflower silage as on the corn-silage ration. 
The Pennsylvania station 5 conducted a feeding test with siinflo" rei 
silage in the winter of 1919-2 and with silage one-half sunflowers 
and one-half corn in the winter of 1920-21. In each case the stand- 
:>f comparison was a good quality of corn silage. In the first 
t st the cows while fed sunflower silage averaged 19.3 pounds of 
milk an" _ ound of butter fat per cow daily: while they were 
?orn silage the average production per cow was 2*2.2 pounds : 
milk and 0.98 pound of butter fat daily. TThen the cows were 
changed from corn silage to sunflower silage there was a decrease 
i : 23.5 per cent in the milk and IS. 5 per cent in the butter fat pro- 
duced. TVhen the cows were changed from sunflower silage to corn 
si] _ : re was an actual increase of 2.3 per cent in the milk pro- 
duced. n< twith -landing an advance of six weeks in the lactat 
This preliminary statement of results obtained with sunflower silage by the Ten: syl- 
vania station in 1919 anc L920 was supplied by S. I. Bechdel. professor of dairy hus- 
bandry at the Pennsylvania Stai lege. A complete report on the sunflower-silage 
will be published by the Pennsylvania Agricultural Experiment 
St oil. 
